[object Object]

Your sequences fire perfectly. Open rates are 4%. Reply rates are 0.6%. The marketing team’s broadcast emails from the same domain are landing in spam now. This is what burnt-domain reputation looks like, and Freshsales sequences are usually the culprit when SDR teams hit a wall. The fix is not better copy. The fix is cadence discipline plus a few infrastructure choices most reps never touch.

Why sequences burn reputation

Email providers — Gmail, Outlook, the corporate filters in between — score sender reputation continuously. Signals that hurt:

  • High volume from a single sending address in a short window.
  • Low engagement rate (opens, replies, conversion of those into ongoing thread).
  • Spam complaints, even at tiny percentages.
  • Bounces, both hard and soft.
  • Identical or near-identical message bodies sent to many recipients.

Sequences hit several of these at once: high volume, often identical templates, sent to lists with varying engagement quality. Without discipline, deliverability degrades over a few weeks and you do not notice until reply rates collapse.

Per-sender volume limits

Each sending mailbox has a soft ceiling before providers throttle. The ceilings vary by provider and warm-up state, but useful rules of thumb:

  • New mailbox, first 30 days: 30 sends per day, ramping.
  • Established mailbox, healthy reputation: 100–150 sends per day sustainable.
  • Above 200/day from a single mailbox: you are in dangerous territory regardless of reputation.

In Freshsales, sequences are configured per user, and a user with five sequences active can fire well above these limits without realising. Audit:

curl -s "https://acme.freshsales.io/api/sequences/sent?date=2026-05-13" \
  -H "Authorization: Token token=$FS_KEY" \
  | jq '[.sends[] | .from_user_id] | group_by(.)
        | map({user_id: .[0], count: length})
        | sort_by(.count) | reverse'

Any user above 100/day is the first place to look when deliverability tanks.

Daily cadence and the weekend trap

The default temptation in sequence design is “follow up daily until they reply”. Three sequence emails in three days is aggressive and usually inferior to a spaced 1-3-7 pattern.

The weekend trap is more subtle. A sequence scheduled for “every weekday” sometimes fires on Monday with both Friday’s missed step and today’s, doubling up. Worse, weekend automation rules that “catch up” missed sends can produce a Monday morning spike that triggers provider throttling.

Configure sequences with explicit “do not catch up” behaviour. Missed sends stay missed. The recipient is not noticing the difference; the spam filter is.

Spacing patterns that work

For cold outbound:

Day 1:  Initial email
Day 3:  Short bump
Day 7:  Value-add (case study, useful link)
Day 14: Direct ask
Day 28: Breakup email

Five touches over four weeks, not over four days. Reply rates measurably higher in published cohort data and provider reputation stays intact.

For warm follow-up after a known engagement (demo, content download):

Day 0:  Acknowledgement, light next step
Day 2:  Specific value tied to their context
Day 7:  Check-in
Day 14: Breakup

Tighter because the recipient just engaged. The signal is real.

See freshsales-sequencing-patterns for the broader patterns this article complements.

Personalisation tokens that matter

Provider reputation also reads “is this message generic at scale”. Three personalisation patterns that move the needle:

  • First-line custom — one sentence at the very top that is specific to the recipient. Not “I saw your company is growing”, that is generic. “I saw your recent funding round and the EU expansion comment in TechCrunch” is specific.
  • Subject line that is not a template — the subject is the first thing a filter scores. Generic subject lines hit spam triggers regardless of body content.
  • Variable signature based on sender mood / time — small variability in the signature line reduces the “exact same message” fingerprint.

Reps hate the first-line custom because it is the work. Reps that do it have reply rates 3-5x reps that do not. The whole point of a sequence is that the bulk of the message is templated and the personal touch is concentrated where it matters.

If you are sending B2B sales sequences, you may be tempted to skip the unsubscribe footer because “this is one-to-one outreach”. Three problems:

  • Most jurisdictions require an unsubscribe mechanism even for B2B. CAN-SPAM, CASL, GDPR-adjacent rules in many countries.
  • A working unsubscribe is a deliverability protector. Recipients who unsubscribe do not mark as spam, which is the worse signal.
  • Provider reputation engines look for the presence of List-Unsubscribe headers and reward senders who include them.

Configure your sending domain to add List-Unsubscribe headers (Freshsales handles this when configured), and include a footer link. The unsubscribe rate will be 0.3-0.8% of sends — a fraction of what spam complaints would otherwise be.

Bounce hygiene

Hard bounces are reputation killers. A sequence list with 5% hard bounce rate is not viable. Two practices:

  1. Verify before send — run new lists through a verification service. Anything not deliverable, suppress.
  2. Auto-pause on bounce — if a contact hard-bounces once, the sequence stops for that contact. If it bounces three times across attempts, the contact is suppressed permanently.
{
  "rule": "Bounce_Suppression",
  "trigger": "Email Bounced",
  "conditions": [
    { "bounce_type": "hard" }
  ],
  "actions": [
    {
      "type": "pause_all_sequences",
      "target": "{{contact.id}}"
    },
    {
      "type": "tag",
      "target": "{{contact.id}}",
      "tag": "deliverability_suppressed"
    },
    {
      "type": "notify_owner",
      "template": "bounce_review_request"
    }
  ]
}

Bounces tell you something about the list, the timing, or the email itself. Investigate, do not just suppress and forget.

Reply detection

Sequences should stop the moment a reply lands. Freshsales reply detection is reliable but not perfect — out-of-office bounces and auto-replies are sometimes counted as engagement and stop the sequence prematurely or, worse, get treated as an actual reply.

Two adjustments:

  • Configure auto-reply detection to keep sequence active when the auto-reply matches OOF patterns.
  • Build a manual review queue for “ambiguous replies” — short replies under 5 words, replies containing only forwarded text. SDR scans daily, decides whether to engage or resume.

Warmup before scale

If you are starting a new sending domain or mailbox, do not point 500 contacts at it on day one. Warmup is a 4-6 week process of gradually increasing volume from a handful per day to operational scale. Multiple specialist tools do this; some are integrated with Freshsales.

The investment in warmup pays back for years. The shortcut of “just start sending” pays back in months of degraded deliverability.

Daily monitoring

Three numbers to watch daily:

  • Open rate per sequence.
  • Reply rate per sequence.
  • Bounce rate per sequence.

When open rate halves week over week, deliverability has degraded. Pause new enrolments, dig into why. By the time reply rate is the indicator, you have already lost two weeks of opportunity.

See freshsales-automations for the workflow automations that complement sequence cadence on the non-email side.

Bottom line

Sequences fail when cadence is reckless. Five touches over four weeks beats five over four days. Cap per-mailbox volume, suppress bounces aggressively, include unsubscribe, personalise the first line, and warm up new domains before pointing scale at them. Deliverability is the product. The clever copy on the third email matters zero if the first email never lands.

[object Object]
Share