Ban protection for your numbers
Gradual warm-up, the link guard, rotating message wording, randomised intervals and a number-risk screen — the tools that keep your numbers alive through bulk sending.
Bulk sending gets numbers banned. That is not marketing hyperbole: messaging platforms read patterns, and a brand-new number firing a thousand identical messages containing a link in its first hour is the definition of the pattern they look for. The tools below exist in Mersal because the problem is real, and they all work behind the scenes without asking anything of you.
Gradual warm-up
A number linked five minutes ago is not the same as a number that has been working for months. Warm-up raises a new number's sending ceiling gradually over days instead of starting it at full capacity.
Warm-up is a platform-level setting controlled by the administrator, and it may be on or off depending on current operating policy. If you are linking a new number and your campaign is large, ask support before launching.
The link guard
Links in a new number's earliest messages are the single most direct cause of a restriction. The link guard puts limits on links specifically during that period, easing them as the number matures. The thresholds themselves are adjustable from the admin panel.
Rotating message wording
A thousand character-for-character identical messages is an obvious pattern. On the notification and campaign screens you can write more than one wording for the same message, and the system rotates between them instead of repeating one body.
How to write good variants
Change the opening, the ending and the sentence order — do not just swap a single word. The goal is messages that read as if a person wrote them at different times, not one template with a synonym substituted.
Intervals and daily caps
Mersal leaves irregular gaps between messages and respects a per-number daily ceiling. Have more than one number? The system spreads the load across them rather than exhausting one.
The number-risk screen
A screen showing each number's standing, its usage history and an indicator of where it sits. Its purpose is entirely practical: to let you see the number heading for a ban before it is banned, so you can ease off it or pull it out of rotation.
When a number drops
- Session backups — every number's session has a copy, so a server restart does not mean re-linking all of them.
- Reconnect versus re-link — if the device was removed from WhatsApp on the phone itself, there is nothing left to reconnect to: the only fix is scanning a fresh QR, and the screen now says so rather than leaving you pressing a button that does nothing.
- Automatic gateway failover — when a gateway fails the message moves to the next one in the ladder, with the credit settled correctly.
Best practice
Send to people who know you
A list that bought from you or contacted you is far safer than a purchased one.
Honour opt-outs
One "spam" report hurts your number more than a thousand successful messages help it.
Start small
Hundreds on day one beats thousands — it costs you a week in results and saves you an enormous amount of risk.
Or take no risk at all
Worry-Free Sending runs the campaign on our infrastructure, with your number out of the equation.