odoo-contact-addons/partner_contact_email2/models/res_partner.py

import logging
from odoo import models, fields, api, tools

_logger = logging.getLogger(__name__)


class ResPartner(models.Model):
    _inherit = "res.partner"

    email2 = fields.Char("Email 2")
    email2_formatted = fields.Char(
        "Formatted Email 2",
        compute="_compute_email2_formatted",
        help='Format email address "Name <email@domain>"',
    )

    @api.depends("name", "email2")
    def _compute_email2_formatted(self):
        """Compute formatted email for partner, using formataddr. Be defensive
        in computation, notably

          * double format: if email already holds a formatted email like
            'Name' <email@domain.com> we should not use it as it to compute
            email formatted like "Name <'Name' <email@domain.com>>";
          * multi emails: sometimes this field is used to hold several addresses
            like email1@domain.com, email2@domain.com. We currently let this value
            untouched, but remove any formatting from multi emails;
          * invalid email: if something is wrong, keep it in email2_formatted as
            this eases management and understanding of failures at mail.mail,
            mail.notification and mailing.trace level;
          * void email: email2_formatted is False, as we cannot do anything with
            it;
        """
        self.email2_formatted = False
        for partner in self:
            emails_normalized = tools.email_normalize_all(partner.email)
            if emails_normalized:
                # note: multi-email input leads to invalid email like "Name" <email1, email2>
                # but this is current behavior in Odoo 14+ and some servers allow it
                partner.email2_formatted = tools.formataddr(
                    (partner.name or "False", ",".join(emails_normalized))
                )
            elif partner.email:
                partner.email2_formatted = tools.formataddr(
                    (partner.name or "False", partner.email)
                )